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The OTL power amplifier circuit composed of TDA2030A

2015-01-03 07:54  
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The OTL power amplifier circuit composed of TDA2030A
The OCL power amplifier type is to use dual power supply without any coupling capacitor, see as the figure, as there is no output coupling capacitor, the low frequency reaction is improved, so it is a hi-fi circuit. The dual power supply is fixed with a transformer whose primary coil middle point is connected with the ground and the voltages of the upper and lower are symmetric, after being rectified and filtered, a ±18V dual power supply is formed, whose output power is 20W.